Inventor
KIKKAWA KAZUYOSHI
JP13 patents
Patents
13 patentsUS5281570AJan 25, 1994
Thermochromic materials
MITSUI TOATSU CHEMICALS49 citations92
US5300473AApr 5, 1994
Recording material comprising crystal of fluoran compound
MITSUI TOATSU CHEMICALS6 citations73
US5270281ADec 14, 1993
Heat-sensitive recording materials and phenol compounds
MITSUI TOATSU CHEMICALS8 citations73
US5391806AFeb 21, 1995
Heat-sensitive recording materials and phenol compounds
MITSUI TOATSU CHEMICALS5 citations62
US5306688AApr 26, 1994
Salicylic acid derivatives, the process for preparing the same and the heat-sensitive recording materials comprising thereof
MITSUI TOATSU CHEMICALS4 citations62
US5302571AApr 12, 1994
Crystals of fluoran compound, crystalline solvates thereof, process for their preparation and recording material comprising said crystal or said solvate
MITSUI TOATSU CHEMICALS2 citations62
US5300661AApr 5, 1994
Process for preparation of a recording material comprising a novel crystal of a fluoran compound
MITSUI TOATSU CHEMICALS4 citations62
US5283222AFeb 1, 1994
Recording material comprising novel crystalline fluoran and process for prepartion of the said crystalline fluoran
MITSUI TOATSU CHEMICALS2 citations62
US5185453AFeb 9, 1993
Crystal of fluoran compound
MITSUI TOATSU CHEMICALS2 citations62
US5691272ANov 25, 1997
Carboxylate and heat-sensitive recording material using same
MITSUI TOATSU CHEMICALS5 citations61
US5559247ASep 24, 1996
Carboxylate and heat-sensitive recording material using same
MITSUI TOATSU CHEMICALS3 citations61
US5245049ASep 14, 1993
Crystals of fluoran compound, crystalline solvates thereof and process for their preparation
MITSUI TOATSU CHEMICALS0 citations52
US5210221AMay 11, 1993
Crystal of fluoran compound and preparation process of the crystal
MITSUI TOATSU CHEMICALS0 citations52